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Old 05-08-2009, 05:37 PM   #1
RC1488
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Default How-to: Marvel Mystery Oil Soak


Purpose: To reduce oil consumption in the Saturn S-series by freeing stuck oil rings. To increase cylinder compression by freeing stuck compression rings.

Tools needed:
Spark plug removal socket
Ratchet
Rag
1 container of Murder Mystery Oil (16oz red container)
Funnel or turkey baster
Measuring Cup ( you will be measuring out 2oz)

::NOTE:: This is an overnight operation. Make sure you are able to dedicate time after the soak is complete.
::NOTE:: More than one soak may be needed for desired results. Increasing soak time may possibly increase results

Time Needed: 10 min for set up. 12 hrs for soak. 10 min for clean up

Procedure:
1. Remove the spark plug boots from the spark plugs. Set them aside.
2. Remove the spark plugs. Set them aside
3. Using the measuring cup measure out 2oz of the MMO.
4. Using the turkey baster or funnel, add 2 oz to the first cylinder.
5. Repeat 3 and 4 for each cylinder. This should leave you with half of the MMO left
6. Place a rag lying over the cylinder holes to keep anything out.
7. Allow the car to sit overnight
8. After the soak overnight, crank the engine over with the rag still over the spark plug holes. This will allow any access fluid to be removed.
9. Reinstall the spark plugs
10. Reinstall the sparkplug boots
11. OPTIONAL: Dump the remaining MMO into your gas tank.
12. Start the car. You will see smoke out the exhaust. This is normal and will go away over time.

Your done!

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Old 02-06-2012, 05:55 PM   #2
rx7carl
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Can anyone attest to this being effective? This is a common procedure we use on Mazda rotaries and it works well. My 97 SL2 has low compression. Shouldn't you disable the ignition and fuel systems before you crank it? Safety first!
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Old 08-15-2012, 01:46 AM   #3
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how can you crank the car w/o the sparks installed?
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Old 08-15-2012, 05:05 AM   #4
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Quote:
Originally Posted by blanksaturn View Post
how can you crank the car w/o the sparks installed?
You turn the key to the start postion and the engine cranks over.
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Old 08-17-2012, 08:59 PM   #5
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i wasnt sure if that meant with a rachet/socket on the crank shaft or with the key...approximatly how long do you hold the key in the start position?
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Old 08-18-2012, 12:36 AM   #6
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Cranking the engine over is to blow out any excessive fluid from the cylinders. 10-15 seconds would be more than enough to clear the cylinders.
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Old 09-03-2012, 12:04 AM   #7
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Is there a time limit for the soak? I started mine at 9am and planned on waiting until the following morning to crank and reinstall the plugs. I also added the remaining 8oz to the motor oil with the intention of changing the oil on schedule in the next 2k miles.
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Old 08-14-2013, 04:01 AM   #8
arthur dent
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hate to burst any bubbles.... but... The problem with the 1.9's tendency to suck oil is due to the design of the original pistons - i.e. - there are no return passages in the base of the oil ring grooves - so, any burnt residue ends up in the ring groove, which builds up, eventually trapping the rings. When this happens, the ring freezes and quits functioning. The fix - is a rebuild. At which time you can either A. - replace the pistons with a return, or B. drill three 3/32 holes in the base of the oil ring groove at 120 degrees spacing (and carefully deburr the holes). In my experience - any "miracle additive" is simply a voodoo cure - and about as likely to work as stump water on a wart..... Your results may vary.
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Old 08-22-2013, 11:17 PM   #9
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I've read over the past 20 years just on SATURN forums that the MM soak has indeed worked for many. I'll guess that the many it worked for was on cars that the rings were shot. Does the MM soak work yes but not on every car. Is it worth a try? Yes it's cheap and worth a try.
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